Archived threads in /sci/ - Science & Math - 292. page
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what is the best way to maximize the IQ of your children, looking at both genetics and environment?
Drill them on IQ tests
>>7946080
/thread
Good education and a stable household are probably the most important things. Education for the mental skills; the household for the psychology. Those things take money though. I've never heard of a prominent intellectual who grew up poor.
What would happen if a person were to increase their levels of testosterone AND estrogen to an equally high level?
>inb4 gender change
I mean increase both at the same time.
prolly fuk up ur liver lol :3
>>7946030
that happens more or less normally, the body produces more androgens in response to estrogen and vice versa, see gynomastia on men using steroids.
Look at the wikipedia articles on m-f and f-m hormone replacement and compile all the side effects.
It seems like everyone on this board is so fucking smart. I'm going to start college this fall and I'm planning on going into CS.
How much stuff from high school actually helped you guys in college?...
>>7945925
I started as CS. I couldn't stand the people in my classes, and the emphasis on teamwork.
Now I study a normiefield, with a math minor.
>>7945929
forgot to add,
the only thing acedemic from highschool that will help you is the mathematics
>>7945925
If you can read write and do math and have a decent memory, you can learn anything, you just have to believe in yourself
>barely understand anything in lectures
>go home and study by myself
>do well on exams
Anyone know this feel? I don't even fucking know why I bother going.
>>7945924
Lectures are pointless.
>>7945924
Same here m8. Am taking Diff Eq and Cal 3, both are easy as shit. Don't even go to lecture anymore.
>>7945924
I do, but my problem is I space out during lecture. Instead what I do is just copy down everything on the blackboard and read through my notes later. Depending on the Prof this works. Lately though I just skip class, study out of books, and then show up for quizzes and tests.
Drawbacks to the first method are that
1) time spent copying stuff in lecture could instead be used on studying
2) some professors spend most of their time talking math and arguments at you and only write down bits and pieces (i.e....
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Is it true that all arguments against perpetual motion are of philosophical nature and from a scientific point of view there is no reason why it would be impossible?
>>7945811
Quite the opposite. The arguments against perpetual motion are scientific and for are purely philosophical.
>>7945811
You can create perpetual motion, but only on the margins and scraps. Only on the waste heat and flaws of other sources of power may you find the infinite and glorious realization of not only a powerhouse but the power source of your own self and that final godhead.
You are mistaken to think that only the prime power production can provide you the true hertz to operate your finial form but it is a path that will only lead to short-circuits and blown fuses through your life.
The righteous path toward illumination...
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>>7945815
If the universe ended tomorrow then that pendulum you have swinging in your clock would count as perpetual motion because it lasted "forever" because "ever" ends when the universe does. Therefore if the big crunch or rip is real then any celestial motion that lasts up to that point is effectively perpetual. Checkmate scientists.
Okay so I did some research into magnets, specifically into the magnetic field generated by a wire. I've been taught that the moving current causes relative compression of the moving charges due to special relativity.
Then why do the magnetic field lines go circular around the wire rather than straight in to the wire?
>>7945686
They form at 90 degrees to the direction of flow (the wire)
The magnetic field can be thought of in terms of the relative change in the electric field due to the motion of electrons. The reason you get these closed loops is because whenever the strength of the E field increases when an electron flows towards it, there's a relative decrease in the E field from where it's flowing away from. When you have a wire with a continuous current flowing around it, the net strength of the E field at any point isn't going to change because whenever an electron moves out of a spot there's another to replace it, but the flow makes...
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What the fuck is in the Gardasil vaccine?
>>7945599
stuff to vaccinate you for the human papilloma virus.
My guess would be Human Papillomavirus Vaccine [Types 6, 11, 16, 18] [Recombinant, adsorbed] but that's just a shot in the dark.
In a lot of anti-virus vaccines and the Gardasil vaccine, it's simply the capsid of the virus (or several common strains of one virus) -- which is the protein coating of the virus. This "teaches" your adaptive immune system to recognize the virus. Then they package it with a matrix of some kind and maybe some proteins to help absorption.
The great mystery of humanity is gravity, I always wondered why only the earth pulls objects, why does everything just floats on mar's or moon's surface? Are we the center of the universe?
>>7945543
>I always wondered why only the earth pulls objects
Joking?
All mass has gravity associated with it. Earth, the moon and even you.
Age?
>>7945543
your mom
Here's the thing. You said a "jackdaw is a crow."
Is it in the same family? Yes. No one's arguing that.
As someone who is a scientist who studies crows, I am telling you, specifically, in science, no one calls jackdaws crows. If you want to be "specific" like you said, then you shouldn't either. They're not the same thing.
If you're saying "crow family" you're referring to the taxonomic grouping of Corvidae, which includes things from nutcrackers to blue jays to ravens.
So your reasoning...
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>>7945379
Who are you even talking to?
>>7945379
What the fuck are you rambling on about?
Who cares?
nigga, jackdaws aren't just in the same family as other crows; they're in the same GENUS (Corvus). now, they've got their own subgenus (Coloeus), do seem to have diverged from other crows fairly early, and some people have suggested giving Coloeus its own genus, but declaring that they're not crows is just a bunch of self-important wankery.
Speaking as a scientist who studies trilobites, I can tell you that the Agnostida diverged from other trilobites fairly basally and that some have suggested that they be given their own grouping outside Trilobita. But...
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Hi, somebody knows a nice book about probability and statistics?
Thanks,
if you look up probability and statistics on amazon you can find a bunch of book on the subject and they even have a comment section where people can write if ithey think it's a good book or not.
Bumping because interedted as well
>>7945301
Don't ever fucking reply to my posts again unless you have something to contribute to this thread
Paper - http://qualifications.pearson.com/content/dam/pdf/Advanced%20Extension%20Award/Mathematics/2013/Exam%20materials/Question-paper-Paper-1-June-2014.pdf
What's the matter? It's just the binomial theorem.
As aforementioned, just using the binomial theorem
>>7944900
This could be expressed so much more easily with factorials
I have an equation for finding a value of x in terms of theta.
That's fine. But now I have some value x and need to find theta. Algebra looked tricky so I stuck it into Wolfram.
I don't understand why Wolfram has included a new 'n' term and what I should be doing with it.
>>7944779
I remember seeing n*pi being substituted in some differential equation solutions but I don't know if it's the same thing.
Regardless, what am I meant to do with the 'n' in my new equation for theta? Just set it to 1?
n just allows it to be periodic, so long as n is an integer.
>>7944779
http://www.wolframalpha.com/input/?i=rearrange+x+%3D+r{[cos%28theta%29+%2B+q]+-+[%281%2F2q%29*sin%28theta%29^2]}+in+terms+of+theta
If an estimate of an integral is made with the trapezium rule where n = infinity, is the result mathematically equivalent to the integral of that function?
>>7944668
if the function is riemann integrable yes.
>>7944668
I want to say that looks like a nice pen but judging from the little splattering around the lettering i'm not sure
It's either running too much ink onto the page or you're writing on watercolour paper
>mfw OP has not taken Calc 1
>mfw OP accidentally(?) discovers the definition of an integral
'' okay today we shall find that ordinary air has a density of about 0.001 g per - cubic meter, while liquid air has a density of about 1.0 g per -cubic meter
estimate the number of air molecules per cubic meter in ordinary air, nG, and in liquid air nL.
estimate the mass m of an air molecule.
estimate the average distance l an air molecule should travel between collisions at normal temperature and pressure (NTP,20 C at 1 atm).
estimate what pressure p in normal atmospheres, a vacuum system should be operated in order that the mean free path be about...
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>>7944648
>okay today we shall find that ordinary air has a density of about 0.001 g per - cubic meter, while liquid air has a density of about 1.0 g per -cubic meter
Most people don't live in vacuum chambers.
>>7944687
i pulled this problem straight out of feynmans lectures, anyway to solve it ?
>>7944648
define air, define molecule, define distance, define collision, temperature, pressure
Why is space exploration so gay now
Will we ever see a resurgence of super huge super expensive projects that capture the imagination of an entire planet
>Why is space exploration so gay now?
because space organizations are not organizing in good coordination
all we need is a good leader,constant funding and more people to collaborate (even the general population should help)
>Will we ever see a resurgence of super huge super expensive projects that capture the imagination of an entire planet
probably would happen in 2036 when apophis is confirmed to crash into earth
>>7944316
>Will we ever see a resurgence of super huge super expensive projects that capture the imagination of an entire planet
First we'd need to start paying for them again.
>>7944316
Don't pretend it wasn't fucking gay back then.
Building giant penises that jizz fire doesn't sound all too straight to me.
